| 31. | The teaching aid works in unison with a similar color-coded wind indicator mounted at the bow.
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| 32. | The skeleton was reassembled, exhibited, and used as a teaching aid in the West Suffolk Hospital.
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| 33. | Every year the Academy members publish hundreds of research papers, dozens of monographs and teaching aids.
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| 34. | It is enjoyable general viewing but could be a useful teaching aid in medical schools ."
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| 35. | Kosovo's crisis has been unusual in several respects, teaching aid groups new lessons, and reinforcing old ones.
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| 36. | The schools lack books and teaching aids.
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| 37. | The company includes workbooks and teaching aids with answers for teachers and parents for each corresponding title.
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| 38. | The software is not only a teaching aid, used by instructors as a substitute for a chalkboard.
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| 39. | A separate field of publishing activity are teaching aids for students, including students of the extramural studies.
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| 40. | "All classrooms are equipped with modern teaching aids and facilities, " KCNA said of the primary school.
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